De Mazancourt Valentin, Castelin Magalie, Renneville Clementine, Mlambo Musa C, Marquet Gerard, Keith Philippe
Muséum national d'Histoire naturelle, Département Adaptations du Vivant, UMR 7208 BOREA, CP026, 57, rue Cuvier, F-75231 Paris, Cedex 05.
Zootaxa. 2019 Jan 7;4543(3):375-387. doi: 10.11646/zootaxa.4543.3.3.
Numerous specimens of a freshwater shrimp with small eggs belonging to the Caridina nilotica complex collected in the South Western Indian Ocean were studied and compared with recent and old collection specimens genetically (16S mitochondrial analysis for recent and type specimens) and morphologically. The results revealed that, in the Indian Ocean, what has been identified by several authors under various species names of the complex C. nilotica, was in fact C. natalensis De Man, 1908. This valid species is re-described and compared with closely related species, often confused with it in this area: C. brachydactyla De Man, 1908, C. brevidactyla Roux, 1920, C. gracilipes De Man, 1892 and C. longirostris H. Milne Edwards, 1837.
对在印度洋西南部采集的大量带有小卵的淡水虾标本进行了研究，这些淡水虾属于尼罗沼虾复合体（Caridina nilotica complex），并在基因层面（对近期采集标本和模式标本进行16S线粒体分析）和形态层面与近期及以往采集的标本进行了比较。结果显示，在印度洋，几位作者以尼罗沼虾复合体的不同物种名称所鉴定的物种，实际上是1908年德·曼命名的纳塔尔沼虾（Caridina natalensis）。本文对这个有效物种进行了重新描述，并与在该地区常与之混淆的近缘物种进行了比较：1908年德·曼命名的短指沼虾（Caridina brachydactyla）、1920年鲁命名的短指沼虾（Caridina brevidactyla）、1892年德·曼命名的细足沼虾（Caridina gracilipes）以及1837年H. 米尔恩·爱德华兹命名的长额沼虾（Caridina longirostris）。
